Regular Article - Theoretical Physics
The trouble with asymptotically safe inflation
Kavli Institute for Theoretical Physics China (KITPC), State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Science, Beijing, 100190, People’s Republic of China
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Published online: 20 April 2013
In this paper we investigate the perturbation theory of asymptotically safe inflation and we find that all modes of gravitational waves perturbation become ghosts in order to achieve a large enough number of e-folds. Formally we can calculate the power spectrum of gravitational waves perturbation, but we find that it is negative. It indicates that there is serious trouble with asymptotically safe inflation.
© Springer-Verlag Berlin Heidelberg and Società Italiana di Fisica, 2013